301014cf6d72 ("ARC: atomic_cmpxchg/atomic_xchg: implement relaxed variants") e188f3330a13 ("ARC: cmpxchg/xchg: rewrite as macros to make type safe") ecf51c9fa096 ("ARC: xchg: !LLSC: remove UP micro-optimization/hack") b0f839b4b915 ("ARC: atomics: disintegrate header") a15286c63d11 ("Merge tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")